Swivel, display device and electronic apparatus

ABSTRACT

A swivel includes: a circular fixed base; and a movable stage capable of rotating relative to the fixed base.

CROSS-REFERENCE TO RELATED APPLICATION

This application is based upon and claims the benefit of priority of the prior Japanese Patent Application No. 2008-102723, filed on Apr. 10, 2008, the entire contents of which are incorporated herein by reference.

FIELD

Embodiments are directed to a swivel on which an electronic apparatus or the like is mounted and which changes the orientation of the electronic apparatus, to a display device supported by the swivel, and to an electronic apparatus including the display device.

BACKGROUND

Conventionally, there is known a swivel on which a device is mounted and which changes the orientation of the device.

For example, Japanese Laid-open Patent Publication No. 2006-120963 discloses a swivel capable of supporting various types of devices such as electric equipment while allowing them to turn. Also, Japanese Laid-open Patent Publication No. 2004-56608 discloses a swivel for turning a device such as a television receiver, a computer display or the like so that the device can be oriented at an optimum angle. The swivels disclosed in those publications have a fixed stage and a rotatable stage mounted on the fixed stage. The rotatable stage is capable of rotating relative to the fixed stage, and both the fixed stage and the rotatable stage are circular in a plan view.

In broad outline, a conventional swivel is configured to have two layered plate-like stages; a fixed stage and a movable stage. The swivel also has a swiveling mechanism. In order to provide the swivel with necessary strength, the height of the swivel tends to be increased, thereby making the swivel thick and look overwhelming.

SUMMARY

According to an aspect of the invention, a swivel includes:

a circular fixed base; and

a movable stage capable of rotating relative to the fixed base.

According to another aspect of the invention, a display device includes:

a swivel including a circular fixed base and a movable stage capable of rotating relative to the fixed base;

a pole standing on the movable stage; and

a display section attached to the pole and having a display screen for displaying an image.

According to another aspect of the invention, an electronic apparatus includes:

a display device includes:

-   -   a swivel including a circular fixed base and a movable stage         capable of rotating relative to the fixed base,     -   a pole standing on the movable stage, and     -   a display section attached to the pole and having a display         screen for displaying an image; and

a main unit that generates an image to be displayed on the display screen.

Additional objects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The object and advantages of the invention will be realized and attained by means of the elements and combinations particularly pointed out in the appended claims.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an external perspective view of a personal computer (PC);

FIG. 2 is another external perspective view of the PC illustrated in FIG. 1 as viewed from back;

FIG. 3 is a side view of a swivel;

FIG. 4 is a bottom view of the swivel;

FIG. 5 is a cross-sectional view of the swivel taken along a line X-X in FIG. 4;

FIG. 6 is a perspective view of the top surface of a circular fixed base;

FIG. 7 is an enlarged view of a part of the fixed base illustrated in FIG. 6;

FIG. 8 is a diagram illustrating the fixed base and a stand plate disposed on the fixed base as viewed from bottom;

FIG. 9 is an enlarged view of a part of the bottom view illustrated in FIG. 8;

FIG. 10 is a diagram similar to FIG. 8 and illustrates the fixed base and the stand plate as viewed from bottom;

FIG. 11 is an enlarged view of a part of the stand plate, which is in the state of being turned up to an end opposite to the end shown in FIG. 8 and FIG. 9;

FIG. 12 is a perspective view of a mounting metallic component provided on the back surface of a PC main unit;

FIG. 13 is a perspective view of the mounting metallic component removed from the back surface of the PC main unit, as viewed from the PC main unit.

FIG. 14 is a diagram of a monitor mounting member fixed to a pole, as viewed from the PC main unit;

FIG. 15 is a perspective view of the monitor mounting member as viewed from the direction of a metal plate;

FIG. 16 is a diagram similar to FIG. 15 and illustrates the state in which a hook is engaged in the middle hook locking hole;

FIG. 17 is a diagram similar to FIG. 15 and FIG. 16 and illustrates the state in which the hook is engaged in the lowermost hook locking hole;

FIG. 18 is an exploded perspective view of the inside of a lower right corner of the front surface (where a display screen is disposed) of the PC main unit;

FIG. 19 is a plan view of the structure of a substrate included in the exploded perspective view illustrated in FIG. 18; and

FIG. 20 is a cross-sectional view of a part taken along an arrow Y-Y illustrated in FIG. 18.

DESCRIPTION OF EMBODIMENT(S)

Embodiment will be described below.

[Entire Structure]

FIG. 1 is an external perspective view of a personal computer (hereinafter referred as “P”) 10, and FIG. 2 is another external perspective view of the PC 10 illustrated in FIG. 1 as viewed from back.

The PC 10 illustrated in FIG. 1 and FIG. 2 has a PC main unit 20 having a display screen 21 on the front. Displayed on the lower part of the front surface of the PC 10 is an icon 22 formed by silk printing. The icon 22 represents a power button. The PC main unit 20 can be turned on when a finger is placed on the icon 22.

The PC 10 illustrated in FIG. 1 and FIG. 2 has an operating circuit composed of a CPU and the like. The operating circuit is disposed in a housing of the PC main unit 20 holding the display screen 21. Specifically, the operating circuit is disposed at a position closer to the rear surface of the PC main unit 20, opposite to the front surface where the display screen 21 is disposed. Therefore, the PC 10 has general functions that allow the PC 10 to serve as a personal computer when a keyboard is additionally provided. Since there is no strong relationship between the keyboard and the embodiment, drawing and description of the keyboard are omitted.

The PC 10 illustrated in FIG. 1 and FIG. 2 also has a swivel 30 and a supporter 40 that supports the back surface of the PC main unit 20. The swivel 30 changes the orientation of the display screen 21 of the PC main unit 20. The supporter 40 supports the PC main unit 20 so that the PC main unit 20 is kept at a height desired by a user. As illustrated in FIG. 2, a cover 41 made of resin is provided to hide the internal support structure of the supporter 40.

[Swivel]

FIG. 3 is a side view of the swivel 30, and FIG. 4 is a bottom view of the swivel 30. FIG. 5 is a cross-sectional view of the swivel 30 taken along a line X-X in FIG. 4.

The swivel 30 has a circular fixed base 310 provided with rubber feet 311 projecting from the bottom surface of the fixed base 310. The swivel 30 also has a movable stage 320 disposed in contact with the top surface of the fixed base 310 and capable of pivoting relative to the fixed base 310.

As illustrated in FIG. 4, the rubber feet 311 are disposed at positions (six in this example) spaced uniformly in a circumferential direction. The rubber feet 311 are provided for the purpose of enabling the circular swivel 30 to stay firmly without sliding, when the swivel 30 is put on, for example, a desk.

FIG. 4 further illustrates two large screws 321 provided to fix a pole 410 to the swivel 30 by engaging in screw holes (not shown) formed on the bottom surface of the pole 410. The pole 410 is a part of the supporter 40 (refer to FIG. 2).

As illustrated in FIG. 5, the circular fixed base 310 has a grease pool 312 that is a hollow formed on the top surface of the fixed base 310 to hold grease. In order to prevent the grease from leaking outside, circular grooves 313 and 314 are formed in the inner side and the outer side of the grease pool 312, respectively.

Further, the movable stage 320 has a stand plate 322, a stand cover 323 and a sole plate 324.

The stand plate 322 is a plate member rotatable by sliding on the top surface of the fixed base 310 while being in contact with that top surface. The shape of the stand plate 322 is formed by: a slide section 322 a; a downward slant 322 b; a circular flat section 322 c; an upward slant 322 d; and another circular flat section 322 e (see FIG. 5 and FIG. 8). The slide section 322 a is in contact with the top surface of the fixed base 310. The downward slant 322 b is provided at the inner side of the slide section 322 a and slanted toward the inner side of the circle formed by the fixed base 310, i.e. toward the center of the stand plate 322. The circular flat section 322 c is provided at the inner side of the slide section 322 a, and the height of the circular flat section 322 c is lower than that of the fixed base 310. The upward slant 322 d is provided at the inner side of the flat section 322 c and slanted toward the center of the stand plate 322. The circular flat section 322 e is provided at the inner side of the upward slant 322 d, the height of the circular flat section 322 e is equal to that of the slide section 322 a. In this way, the surface of the stand plate 322 is formed to be vertically uneven, improving the strength of the stand plate 322. Further, holes 322 f in which the screws 321 for fixing the pole 410 to be inserted are formed in the stand plate 322 (see FIG. 8).

The stand cover 323 is a member that covers the top surface as well as the most part of the lateral surface of the stand plate 322, and forms the appearance of the swivel 30.

Further, the sole plate 324 is a plate member that covers the bottom surface of the swivel 30. The sole plate 324 is fixed to the stand plate 322 by screws 325. Also, the sole plate 324 has a central part 324 a formed to project downward, making the sole plate 324 stronger than a simple flat plate. Further, the sole plate 324 has holes 324 b formed at positions corresponding to the screws 321 for fixing the pole 341 so that the pole 341 can be attached or detached without removing the sole plate 324.

FIG. 6 is a perspective view of the top surface of the circular fixed base 310, and FIG. 7 is an enlarged view of a part of the fixed base 310 illustrated in FIG. 6.

The fixed base 310 has the grease pools 312 spaced in a circumferential direction. Holding the grease in the grease pools 312 improves the sliding property of the stand plate 322 of the movable stage 320 disposed on the fixed base 310.

Also, the grooves 313 and 314 are formed on the top surface of the fixed base 310, specifically, in the inner side and the outer side of the grease pools 312, respectively. These grooves 313 and 314 are provided to prevent the grease overflowing the grease pools 312 from leaking outside the fixed base 310.

FIG. 8 illustrates the fixed base 310 and the stand plate 322 disposed on the fixed base 310 as viewed from bottom, and FIG. 9 is an enlarged view of a part of FIG. 8. In FIG. 8 and FIG. 9, the sole plate 324 and the pole 410 are removed.

The sole plate 324 (refer to FIG. 4) is fixed to the stand plate 322 with screws 325, which are inserted into screw holes formed in the respective centers of six bosses 326 standing on the bottom surface of the stand plate 322.

Here, the fixed base 310 has an inner end surface 315 that defines an inner annulus of the fixed base 310. The inner end surface 315 is divided into two parts, an inner end surface 315 a with a long radius and an inner end surface 315 b with a short radius, by two stoppers 316 and 317 serving as boundaries. The radius of the inner end surface 315 b is shorter than the radius of the inner end surface 315 a by the difference between the stoppers 316 and 317. Only a boss 326 a, one of the bosses 326 standing on the bottom surface of the stand plate 322, is in contact with the inner end surface 315 a with the large radius. The remaining five bosses 326 b are formed at positions where the bosses 326 b can touch the inner end surface 315 b with the short radius.

The rotation angle of the stand plate 322 is regulated by the boss 326 a and the two stoppers 316 and 317.

FIG. 8 and FIG. 9 illustrate the boss 326 a in the state of abutting the stopper 316. This is the state in which the stand plate 322 is at one end of the rotation angle of the stand plate 322. In this state of the inner end surface 315 of the fixed base 310, as illustrated in FIG. 8, the positions of the stand plate 322 and the fixed base 310 are regulated by the boss 326 a and three of the five remaining bosses 326 b.

FIG. 10 is similar to FIG. 8 and illustrates the fixed base 310 and the stand plate 322 as viewed from bottom. FIG. 10 illustrates a state in which the stand plate 322 is turned from the state illustrated in FIG. 8.

In FIG. 10, the stand plate 322 is turned from the state illustrated in FIG. 8, and the boss 326 a is at a position away from both of the stoppers 316 and 317. Like FIG. 8, the position of the inner end surface 315 of the fixed base 310 is regulated by the boss 326 a and other three of the remaining five bosses 326 b.

FIG. 11 is an enlarged view of a part of the stand plate 322, which is in the state of being turned up to the other end opposite to the one end shown in FIG. 8 and FIG. 9.

The boss 326 a abuts the stopper 317, not the stopper 316 illustrated in FIG. 8 and FIG. 9, thereby defining the other limit of the rotation of the stand plate 322.

In this way, the structure for regulating the rotation angle is employed in the swivel 30. In this structure, the angle of the orientation of the display screen 21 illustrated in FIG. 1 is regulated to be within a range of about 160 degrees. This is a range sufficient to adjust the orientation of the display screen 21. And besides, limiting the range of the orientation of the display screen 21 in this way can prevent the following problem. Although not shown in FIG. 1 and FIG. 2, various cords and cables are connected to the PC main unit 20 when the PC main unit 20 is actually in use. If the PC main unit 20 is freely rotatable at any angle, the cords and cables are very likely to wind around the PC main unit 20. Accordingly, the limited range of the rotation makes it possible to prevent such undesirable winding of the cords and cables.

[Support Structure]

As illustrated in FIG. 2, for example, the pole 410 is disposed to stand on the swivel 30, and the back surface of the PC main unit 20 is attached to the pole 410.

FIG. 12 is a perspective view of a mounting metallic component 420 provided on the back surface of the PC main unit 20.

The mounting metallic component 420 is fixed to the back surface of the PC main unit 20 to attach the PC main unit 20 to the pole 410 (refer to FIG. 2). The mounting metallic component 420 has a mounting surface 421 for attaching the PC main unit 20 to the pole 410. The entire mounting metallic component 420 other than the mounting surface 421 is covered with a protrusion 201 of the housing of PC main unit 20 and a resin frame 429, in view of design and safety.

On the mounting surface 421 of the mounting metallic component 420, a pair of vertically aligned threaded holes 422 a and 422 b are formed at each of the right side and the left side, i.e. four threaded holes in total are formed. Further, an engaging hole 423 is formed at each of the right side and the left side of the mounting surface 421, and a hook 424 is formed at an upper central part (illustrated at a lower part of the mounting surface 421 in FIG. 12).

FIG. 13 is a perspective view of the mounting metallic component 420 removed from the back surface of the PC main unit, as viewed from the PC main unit.

As illustrated in FIG. 13, two fixing sections 425 for fixing the mounting metallic component 420 to the PC main unit 20 by screws are provided at the right and left sides of the mounting metallic component 420. Each of the fixing sections 425 has two mounting holes 425 a. The mounting metallic component 420 is secured to the PC main unit 20 by these mounting holes 425 a.

Also, as illustrated in FIG. 13, a frictional fastening section 426 is provided at each of the right side and the left side of the mounting metallic component 420. This is a structure that allows the display screen 21 of the PC main unit 20 to tilt up and down within some angular range.

The force required to tilt the display screen 21 is adjusted by turning a nut 426 a provided at each of the frictional fastening sections 426.

FIG. 14 is a diagram of a monitor mounting member 430 fixed to the pole 410, as viewed from the PC main unit 20. As illustrated in FIG. 2, the pole 410 is formed to extend upward and makes a U-turn to extend downward. The pole 410 is composed of two posts extending in parallel to each other except for the upper part of the pole 410 where the two posts are joined. The monitor mounting member 430 is secured to these vertically extending two parallel posts. The monitor mounting member 430 has a resin board 440 illustrated in FIG. 14 and a metal plate 450 disposed at the back of the resin board 440 where the metal plate 450 is hidden (cf. FIG. 15). The resin board 440 is fixed to the metal plate 450 by six screws.

In the resin board 440, one set of vertically aligned through holes 442 a, 442 b, 442 c and 442 d is formed at each of the left and right sides. These through holes 442 a, 442 b, 442 c and 442 d are formed at the same spacing as that between the vertically aligned threaded holes 422 a and 422 b illustrated in FIG. 12. In a central part between the two columns of the through holes 442 a, 442 b, 442 c and 442 d, hook through holes 443 a, 443 b and 443 c are vertically aligned at regular intervals. Further, between the column of these hook through holes 443 a, 443 b and 443 c and each of the two columns of the through holes 442 a, 442 b, 442 c and 442 d, three projections 444 a, 444 b and 444 c are vertically aligned. In the center of the projection 444 b, which is positioned in the middle of the three projections 444 a, 444 b and 444 c, a hole (not shown) is formed to serve as a screw fastening section used for attachment to the metal plate 450 (cf. FIG. 15). Each of these projections 444 a, 444 b and 444 c has outer dimensions that allow them to be inserted into the engaging hole 423 illustrated in FIG. 12.

FIG. 15 is a perspective view of the monitor mounting member 430 as viewed from the direction of the metal plate 450.

In the metal plate 450, one set of vertically aligned mounting holes 451 a, 451 b, 451 c and 451 d is formed at each of the right and left sides. The mounting holes 451 a, 451 b, 451 c and 451 d are vertically aligned at the same spacing as that between the vertically aligned threaded holes 422 a and 422 b illustrated in FIG. 12. In a central part between the two columns of the mounting holes 451 a, 451 b, 451 c and 451 d, hook locking holes 461 a, 461 b and 461 c are vertically aligned at regular intervals.

Here, the mounting holes 451 a, 451 b, 451 c and 451 d in each of the two columns formed at the right and left sides are formed at positions respectively aligned with the corresponding through holes 442 a, 442 b, 442 c and 442 d illustrated in FIG. 14. The mounting holes 451 a, 451 b, 451 c and 451 d are formed at the same spacings as those of the threaded holes 422 a and 422 b illustrated in FIG. 12 in both the vertical and lateral directions.

The vertically aligned hook locking holes 461 a, 461 b and 461 c formed on the metal plate 450 are also provided at positions that respectively correspond to the positions of the vertically aligned hook through hole 443 a, 443 b and 443 c formed on the resin board 440.

Here, as illustrated in FIG. 15, the hook 424 of the mounting metallic component 420 illustrated in FIG. 12 is engaged in the hook locking hole 461 a that is the uppermost one of the three hook locking hole 461 a, 461 b and 461 c. In this state, the uppermost projection 444 a among the vertically aligned projections 444 a, 444 band 444 c formed on the resin board 440 illustrated in FIG. 14 is fit in the engaging hole 423 illustrated in FIG. 12. Further, the uppermost mounting hole 451 a among the four vertically aligned mounting holes 451 a, 451 b, 451 c and 451 d is positioned to match the upper threaded hole 422 a of the vertically aligned threaded holes 422 a and 422 b illustrated in FIG. 12, and the second mounting hole 451 b is positioned to match the lower threaded hole 422 b. When the two mounting holes 451 a and 451 b and the two threaded holes 422 a are 422 b are used in this state to secure the PC main unit 20 (cf. FIG. 1) with screws, the PC main unit 20 can be fixed in the uppermost position.

FIG. 16 is a diagram similar to FIG. 15, but illustrates the state in which the hook 424 is engaged in the middle hook locking hole 461 b.

As illustrated in FIG. 16, the hook 424 of the mounting metallic component 420 illustrated in FIG. 12 is engaged in the hook locking hole 461 b that is the second one of the three hook locking hole 461 a, 461 b and 461 c. In this state, the second projection 444 b among the vertically aligned projections 444 a, 444 b and 444 c formed on the resin board 440 illustrated in FIG. 14 is fit in the engaging hole 423 illustrated in FIG. 12. Further, the second uppermost mounting hole 451 b among the four vertically aligned mounting holes 451 a, 451 b, 451 c and 451 d is positioned to match the upper threaded hole 422 a of the vertically aligned threaded holes 422 a and 422 b illustrated in FIG. 12, and the third mounting hole 451 c is positioned to match the lower threaded hole 422 b. When the two mounting holes 451 b and 451 c and the two threaded holes 422 a are 422 b are used in this state to secure the PC main unit 20 (cf. FIG. 1) with screws, the PC main unit 20 can be fixed in the position slightly lower than the position illustrated in FIG. 15.

FIG. 17 is a diagram similar to FIG. 15 and FIG. 16, but illustrates the state in which the hook 424 is engaged in the lowermost hook locking hole 461 c.

As illustrated in FIG. 17, the hook 424 of the mounting metallic component 420 illustrated in FIG. 12 is engaged in the hook locking hole 461 c that is the lowermost one of the three hook locking hole 461 a, 461 b and 461 c. In this state, the lowermost projection 444 c among the vertically aligned projections 444 a, 444 b and 444 c formed on the resin board 440 illustrated in FIG. 14 is fit in the engaging hole 423 illustrated in FIG. 12. Further, the third mounting hole 451 c among the four vertically aligned mounting holes 451 a, 451 b, 451 c and 451 d is positioned to match the upper threaded hole 422 a of the vertically aligned threaded holes 422 a and 422 b illustrated in FIG. 12, and the lowermost mounting hole 451 d is positioned to match the lower threaded hole 422 b. When the two mounting holes 451 b and 451 c and the two threaded holes 422 a are 422 b are used in this state to secure the PC main unit 20 (cf. FIG. 1) with screws, the PC main unit 20 can be fixed in the lowermost position.

Here, in the mounting metallic component 420 illustrated in FIG. 12, the two vertically aligned threaded holes 422 a are 422 b are formed, but three or more vertically aligned threaded holes may be formed to realize a stronger fastening structure.

Also, as illustrated in FIG. 14, the four mounting holes 442 a, 442 b, 442 c, 442 d are vertically aligned. However, the number of the mounting holes may be three as long as they can vertically adjust the height of the PC main unit 20 to either one of two stages. Further, the number of the mounting holes may be five or more so that the height of the PC main unit 20 can be adjusted to any one of three or more stages. However, the number of the vertically aligned mounting holes is larger than the number of the vertically aligned threaded holes of the mounting metallic component 420 illustrated in FIG. 12

Also, as illustrated in FIG. 14, the number of the vertically aligned projections 444 a, 444 b and 444 c is three, but it is not limited to three as long as the number corresponds to the number of the stages to which the height of the PC main unit 20 can be adjusted. This is also true for the number of the hook locking holes 461 a 461 b and 461 c illustrated in FIG. 15.

Further, in the embodiment described above, the hook 424 is provided in the mounting metallic component 420 illustrated in FIG. 12, and the hook locking holes 426 a, 426 b and 426 c are formed in the monitor mounting member 430. However, their structures may be reversed, i.e. the monitor mounting member 430 may be provided with hooks while the mounting metallic component 420 may be provided with hook locking holes.

Furthermore, in the embodiment described above, the engaging hole 423 is formed in the mounting metallic component 420, and the projections 444 a, 444 b and 444 c to fit in the engaging hole 423 are formed in the monitor mounting member 430. However, their structures may also be reversed. In other words, the monitor mounting member 430 may be provided with engaging holes and the mounting metallic component 420 may be provided with projections.

Note that FIG. 14 to FIG. 17 illustrates the states in which the cover 41 made of resin is removed. After the adjustment of the height is completed and the PC main unit 20 is secured by screws, the cover 41 illustrated in FIG. 2 is placed to cover the metal plate 450 and is secured to the periphery of the resin board 440. As a result, the state in which the supporter 40 is covered as illustrated in FIG. 2 is realized.

[Icon Representation]

FIG. 18 is an exploded perspective view of the inside of a lower right corner of the front surface (where the display screen 21 is disposed) of the PC main unit 20 (see FIG. 1). FIG. 19 is a plan view of the structure of a substrate 520 included in the exploded perspective view illustrated in FIG. 18. FIG. 20 is a cross-sectional view of a part taken along an arrow Y-Y in FIG. 18.

Illustrated in the lowermost part of FIG. 18 is the shape of an inner surface of a front cover 210. The front cover 210 forms a part of a housing of the PC main unit 20 illustrated in FIG. 1 and is shaped like a frame surrounding the display screen 21. In the part covered by the front cover 210, a shield board 510, the substrate 520, a spacer 530, and an icon sheet 540 are stacked in this order with the shield board 510 on the top, and fixed by inserting four screws 551 into holes formed in the respective centers of bosses 211 standing on the inner surface of the front cover 210.

As illustrated in FIG. 19, plural LEDs 521 are disposed on the substrate 520, and electrodes 522 for a touch sensor are also formed so as to correspond to and surround some of the LEDs 521.

Further, holes 523 for fixing by the screws 551 (cf. FIG. 18) are formed on the substrate 520. Also, a circuit placement section 524 for the touch sensor is formed (specific description of the circuit being omitted), and a connector 525 for communications with the outside such as receipt of electric power and transmission of signals is provided.

The spacer 530 is provided to keep a predetermined distance between the substrate 520 and the icon sheet 540. In addition, mounting holes 531 for fixing by screws and holes 532 for passing light from the LEDs 521 disposed on the substrate 520 are formed in the spacer 530.

The icon sheet 540 is opaque except for a light transmitting section (icon, not shown) which is formed on a light path for light from the LEDs 521 disposed on the substrate and whose shape defines the outline of passing light. Also, holes 541 for fixing by screws are formed in the icon sheet 540.

The shield board 510 is provided to cover the substrate 520, thereby preventing the touch sensor disposed on the substrate 520 from malfunctioning due to electromagnetic noise from the outside.

As illustrated in FIG. 20, the front cover 210 has a base 212 made of transparent resin and a film 213 formed by applying a coating to the outer surface of the base 212. The film 213 is provided to hide the inside of the front cover 210 so that the inside can not be seen from the outside, and also serves to show light emitted from the LEDs 521 disposed on the substrate 520 and passing through the icon sheet 540. Various icons appear on the front cover 210 only after the PC main unit 20 illustrated in FIG. 1 is turned on, causing the LEDs 521 disposed on the substrate 520 to emit light. Therefore, when the PC main unit 20 is turned off, a neat and simple appearance can be achieved, improving the design. On the other hand, when the PC main unit 20 is turned on thereby causing the LEDs to emit light, the user can readily recognize the fact that the PC main unit 20 is turned on.

As described above, each of the electrodes 522 for the touch sensor is disposed to surround the corresponding LED 521 on the substrate 520. When a finger is placed to touch an icon that appears on the front cover 21 because of light from the LED 521 disposed in the center of the electrode 522, the touch sensor responds so that the PC main unit 20 starts an operation according to the touch sensor. Here, the example illustrated in FIG. 18 through FIG. 20 does not have a moving section thereby achieving a relatively simple structure, while being able to serve in a manner similar to a push button, so that low profile and high resistance are realized.

As an exception however, the icon 22 representing the existence of the power button is formed oh the front cover 210 by silk printing as illustrated in FIG. 1. This is because the LEDs 521 start emitting light only after power-on, and it is necessary to indicate the location of the power button before the LEDs 521 emit light, i.e. before power-on. Incidentally, the touch sensor for realizing the power button is in the state in which power is supplied to minimum required parts so that the touch sensor can respond even before power-on.

Note that the above-described PC main unit 20 is a PC mounted with an operating circuit which is composed of a CPU and the like and disposed in a housing of the main unit of the PC holding a display screen. However, the disclosure of the present application may be applied to a PC having: a display unit holding a display screen; and a main unit provided with an operating circuit which is composed of a CPU and the like, in which the two units are separate elements and connected to each other with a cable. Further, the disclosure of the present application may also be applied to devices such as TV monitors other than PCs.

According to the embodiment, since the fixed base of the swivel is circular, it is possible to provide the movable stage with predetermined strength by utilizing space formed in an inner side of the circle formed by the fixed base while making the entire swivel thin.

Further, the display device and electronic apparatus according to the embodiment are excellent in design because they are provided with a low-profile swivel having necessary strength.

All examples and conditional language recited herein are intended for pedagogical purposes to aid the reader in understanding the principles of the invention and the concepts contributed by the inventor to furthering the art, and are to be construed as being without limitation to such specifically recited examples and conditions, nor does the organization of such examples in the specification relate to a illustrating of the superiority and inferiority of the invention. Although the embodiments of the present invention have been described in detail, it should be understood that the various changes, substitutions, and alterations could be made hereto without departing from the spirit and scope of the invention. 

1. A swivel comprising: a circular fixed base; and a movable stage capable of rotating relative to the fixed base.
 2. The swivel according to claim 1, wherein the movable stage has a stand plate being in contact with a top surface of the fixed base, and the stand plate has a section that extends such that a height of the section interferes with a height of the fixed base at an inner side of a circle formed by the fixed base.
 3. The swivel according to claim 2, wherein the stand plate has a hole for screwing a bottom surface of a pole that supports a device.
 4. The swivel according to claim 2, wherein the movable stage has a stand cover that covers the stand plate.
 5. The swivel according to claim 2, wherein the movable stage has a sole plate under the stand plate.
 6. The swivel according to claim 1, wherein the fixed base has a rubber foot on a bottom surface of the fixed base.
 7. The swivel according to claim 1, wherein the fixed base has a hollow section formed on a top surface of the fixed base to hold grease.
 8. The swivel according to claim 1, wherein the stand plate has a boss projecting downward and provided at a position along an inner end surface formed along a circumferential direction of a circle formed by the fixed base, and the fixed base has a stopper formed by a step made in the circumferential direction, and the stopper regulates rotation of the movable stage by abutting the boss.
 9. A display device comprising: a swivel comprising a circular fixed base and a movable stage capable of rotating relative to the fixed base; a pole standing on the movable stage; and a display section attached to the pole and having a display screen for displaying an image.
 10. An electronic apparatus comprising: a display device comprising: a swivel comprising a circular fixed base and a movable stage capable of rotating relative to the fixed base, a pole standing on the movable stage, and a display section attached to the pole and having a display screen for displaying an image; and a main unit that generates an image to be displayed on the display screen. 